Ponente
Descripción
Isospin symmetry, a fundamental symmetry in nuclear physics arising from the identical behaviors of protons and neutrons. The symmetry violation is usually explained as isospin non-conserving (INC) forces and continuum effect. In experiments, plenty of efforts are made in mass and decay spectroscopy.
Hence, to extend this study into the heavier nuclei for the upper $fp$ shell, we propose to measure the masses of $^{57}$Zn, $^{61}$Ge, $^{65}$Se, and $^{69}$Kr together with the $\beta$-decay spectroscopy of $^{63}$Se simultaneously, by employing the complex of the Multiple-Reflection Time-of-Flight Mass Spectrometer (MRTOF-MS) and EURICA decay station at the ZeroDegree.
New mass data could be utilized to study the effects of isospin-nonconserving (INC) force in higher isospin multiples through determining the Coulomb displacement energy (CDE), in which a reduction of staggering in CDE is anticipated in theory.
Decay spectroscopy of $^{63}$Se is critical for studying the ground-state mirror asymmetry, since the $T$$ = 5/2$ nuclei $^{63}$Se/$^{63}$Cu could be another promising candidate to observe the violation of the ground state in the mirror system, of which the ground state feeds to unbound $^{63}$As, similar to $^{73}$Sr/$^{73}$Br.
